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Newport 50105 Reflecting Microscope Objective Lens 15x/0.4 Casegrain with Mount

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Product Description

Manufacturer: Newport

Model: 50105

Condition: Used. Comes in non-original packaging. This lens is in Good cosmetic condition overall with a few minor scuffs/rub marks from prior use.  We can't see a model number, so we can't tell if this is Model number 50105-01 (160mm back focal length), or 50105-02 (infinite back focal length). The photos show the exact item(s) the buyer will receive.

Notes: This lens was removed from a decommissioned piece of measuring equipment (Therma-wave Opti-Probe 2600B) and not tested separately. No manuals, cords/cables, or additional items are included if not listed or shown.


  • (1) Newport 15x Reflecting Objective Lens
  • (1) Mounting adapter ring
  • (1) Mounting spacer ring


  • Manufacturer: Newport
  • Model: 50105-(?? see notes)
  • Reflective microscope objective lens
  • Magnification: 15x
  • Reverse Casegrain design
  • Focuses light with refrective surfaces (vs. refracting lenses)
  • Broadband coated, usable wavelength range 200nm to 20µm
  • Zero chromatic aberration
  • Negligible coma, spherical or astigmatic aberrations
  • Single material construction for minimal thermal expansion effects
  • Spot size: 2µm
  • Numerical aperture: 0.4
  • Field of view: 1.2mm
  • Working distance: 24mm

30 Day Guarantee

  • Guaranteed to be as described
  • Can be returned for flaws or malfunctions that were not disclosed
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